High-performance wide bandgap perovskite solar cells fabricated in ambient high-humidity conditions
Lead-halide perovskite solar cells (PSCs) are currently the most promising emergent thin-film photovoltaic technology, having already reached power conversion efficiency (PCE) levels of state-of-the-art wafer-based silicon cells. The class of wide bandgap PSCs has also demonstrated high PCE values,...
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Published in | Materials advances Vol. 2; no. 19; pp. 6344 - 6355 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
04.10.2021
|
Online Access | Get full text |
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Summary: | Lead-halide perovskite solar cells (PSCs) are currently the most promising emergent thin-film photovoltaic technology, having already reached power conversion efficiency (PCE) levels of state-of-the-art wafer-based silicon cells. The class of wide bandgap PSCs has also demonstrated high PCE values, thus becoming highly attractive for top sub-cells in tandem devices constructed with silicon or other types of bottom sub-cells. In this study, wide bandgap double-halide (Cs
0.17
FA
0.83
PbI
3−
x
Br
x
) perovskite absorbers were developed with different bromine content, aiming to obtain bandgap values between 1.66 to 1.74 eV, by a glovebox-free (ambient) procedure. Low-cost inorganic materials,
i.e.
TiO
2
and CuSCN, were used for the electron and hole transport layers, respectively. The 1.70 eV bandgap perovskite resulted in the highest reproducibility and stability (>80% initial PCE after 3500 hours) properties of the PSCs, remarkably attaining 16.4% PCE even with ambient and high humidity (∼70%) fabrication conditions.
Low cost wide-bandgap perovskite solar cells (PSCs) fabricated in ambient air (relative humidity ∼70%) with a PCE of 16.4% with long term stability. |
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Bibliography: | 10.1039/d1ma00432h Electronic supplementary information (ESI) available. See DOI |
ISSN: | 2633-5409 2633-5409 |
DOI: | 10.1039/d1ma00432h |